Home / 7,986.27-11,979.45-2,788.50

Finding the Fourth Proportional to 7,986.27, 11,979.45 and 2,788.50

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Solution

The fourth proportional to 7,986.27, 11,979.45 and 2,788.50 is: 4,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.27 : 11,979.45 = 2,788.50 : x
  2. Step 2: Convert to fraction form
    7,986.27/11,979.45 = 2,788.50/x
  3. Step 3: Cross multiply
    7,986.27x = 11,979.45 × 2,788.50
  4. Step 4: Simplify right side
    7,986.27x = 33,404,696.33
  5. Step 5: Solve for x
    x = 33,404,696.33/7,986.27
  6. Step 6: Final answer
    x = 4,182.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.